Developed and integrated JWT rotation and secret management for the harness/harness repository, focusing on enhancing API security and backend reliability. The work involved updating authentication and token generation logic in Go to support multiple secrets for both verification and signing, enabling seamless secret rotation without disrupting API access. By allowing concurrent use of old and new secrets, the implementation reduced operational risk and eliminated downtime during secret updates. This approach strengthened the system’s security posture and improved traceability of authentication changes. The project leveraged expertise in API security, backend development, and JWT, delivering a robust solution for secure, uninterrupted API operations.